<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }
    body {
      background-color: rgb(214, 198, 198);
    }
    .wrapper {
      width: 60vw;
      height: 60vh;
      background-color: rgb(223, 182, 95);
      margin: 2rem auto;
    }

    .content {
      width: 100%;
      
    }
    .content > * {
      width: 33.3%;
    }

  </style>
</head>
<body>
  <section class="wrapper">
    <header>
      <div class="info">提示</div>
      <h1 class="title">标题</h1>
    </header>
    <section class="content">
      <nav></nav>
      <article></article>
      <aside></aside>
    </section>
    <footer>
      页脚
    </footer>
  </section>
</body>
</html>